High severityNVD Advisory· Published Sep 27, 2026· Updated Sep 29, 2026
CVE-2026-89136
CVE-2026-89136
Description
When using RPK (Raw Public Key), the client side of a TLS 1.2, 1.3 and DTLS 1.2 connection could accept an unsolicited server_cert_type=RawPublicKey which allowed a malicious or misbehaving server to bypass authentication. RPK is off by default and only enabled in --enable-rpk OR --enable-all OR --enable-distro AKA HAVE_RPK builds.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
1Patches
Vulnerability mechanics
References
1News mentions
2- High-Severity Vulnerabilities Patched in OpenSSL, WolfSSLSecurityWeek · Sep 30, 2026
- wolfSSL 5.9.4 Fixes 11 TLS Security Flaws and Expands Post-Quantum Cryptography SupportCyber Security News · Sep 29, 2026